/*
 * Copyright (c) 2002-2020 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { parseAST } from '@literal-jsx/parser'
import visit from 'unist-util-visit'

export const validateJSX = () => tree => {
  return visit(tree, node => {
    if (node.type !== 'jsx') {
      return
    }

    const jsxTree = parseAST(`<div>${node.value}</div>`)

    visit(jsxTree, jsxNode => {
      const eventBinder =
        jsxNode.attributes &&
        jsxNode.attributes
          .map(attribute => attribute.name.name)
          .find(name => name.startsWith('on'))
      if (eventBinder) {
        throw `Event binder ${eventBinder} found in ${jsxNode.name.name}`
      }
    })
  })
}
